Dictionary of Medieval Names
from European Sources

Ermesinde f. Old High German ermen, Old Saxon irmin 'great, strong' + Old Saxon swīth, Gothic swinþs from Proto-Germanic *swinþaz 'strong'.

France
Latin
814 Ermesindis (nom) StVdM-II A1; c823 Ermensindis (nom) irminon-vol2 27, CE, Ermsindis (nom) ibid. 7, Wan; 1038 Ermensenna (nom) StVdM-II 719; a1127 Ermesindis (nom) ibid. 701; 1179 Hermensendis (nom) clairvaux-12thc 178
Spain
Latin
1022 Ermesins (abl) CDCB-XV MMCLXXVI; 1083 Ermesendis (gen) ibid. MMCCI, Ermessendis (nom) ibid. MMCCI
Catalan
1250 Ermesen RusGeb p. 272
Cite as: S.L. Uckelman. "Ermesinde". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Ermesinde.